The purple fellow is named Pudd. Nobody knows where he came from or what he is. Though this is true of about 30% of Snail Factory staff, Pudd is unique in that Dr. Rhizo, a few years before his demise, determined that Pudd had formed spontaneously of spilled biological materials and having developed in the factory, simply took to acting as a gofer. Jerry, after making several random demands to nobody in particular was always served by Pudd, and so Pudd became his own personal servant of sorts.
Pudd would of course become the Factory's longest serving C.E.O. from 1972-1998.